DataVXAdvances in Cement ResearchPaper
journal article·2024-11-01

Compressive strength and chloride permeability of cement-based materials with high-volume compound mineral admixtures

Nannan Zhang, Qionglin Fu, Junfeng Wang, Liulei Lu, Qi Luo, Feng Xing

Advances in Cement Research· Volume 36· Issue 11
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Source abstract

Abstract

Ground granulated blast-furnace slag (GGBFS) is well known to be capable of improving the performance of cement-based materials, but few studies focus on the impact of its large dosage on concrete containing basalt powder. In this study, the compressive strength and chloride permeability of cement-based materials with compound mineral admixtures (CMAs) containing high-volume GGBFS, basalt powder and desulfurisation gypsum were investigated. The results showed that the mortar strengths at 3, 7 and 28 days decreased with increasing GGBFS content, but that at 56 and 84 days increased with the addition of 45 wt% GGBFS. This is because the activity of GGBFS at an early stage has not been stimulated and the pozzolanic effect is exerted at a later stage. Moreover, cement replacement with up to 55 wt% GGBFS caused a significant decrease in the chloride diffusion coefficient of the mortar and concrete. Furthermore, the incorporation of GGBFS led to a remarkable refinement in pore structure of the hardened paste due to pozzolanic and filler effects. Therefore, the partial replacement of cement with high CMA contents (≥70 wt%) in concrete is desirable for ocean projects requiring low chloride permeability, and significantly reduces carbon dioxide emissions.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: Concrete and Cement Materials Research · Magnesium Oxide Properties and Applications · Innovative concrete reinforcement materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

PhD student, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, China

Research Associate, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, China; College of Fisheries and Life Science, Hainan Tropical Ocean University, Sanya, China

Professor, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, China; Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen, China

Associate Researcher, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, China; Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen, China (corresponding author: )

Associate Researcher, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, China; Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen, China

Professor, Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen, China

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